Finding the Fourth Proportional to 23,086.77, 31,859.73 and 12,476.40

Step by Step Solution

1. Step 1: Write the proportion equation
   23,086.77 : 31,859.73 = 12,476.40 : x
2. Step 2: Convert to fraction form
   23,086.77/31,859.73 = 12,476.40/x
3. Step 3: Cross multiply
   23,086.77x = 31,859.73 × 12,476.40
4. Step 4: Simplify right side
   23,086.77x = 397,494,615.90
5. Step 5: Solve for x
   x = 397,494,615.90/23,086.77
6. Step 6: Final answer
   x = 17,217.42